Recent content by user977784078

I highly recommend going through these videos on YouTube. They are a fun and effective way to at least get some preparation done. These video lectures may not be rigorous or advanced enough but I think they are a good way to start. The following two videos are introductory...

At most universities you don't need much maths for computer science, unless it is something like Cambridge. At my university you have to take linear algebra, differential equations and multivariable calculus (combined in 1 subject), probability, logic and discrete mathematics (combined in 1...

Homework Statement In the Compton Effect, which of the following is conserved? Select all that apply: Total relativistic momentum. Total energy of the photon. Rest mass energy of the electron. Total relativistic energy. Relativistic kinetic energy of the electron. Net charge. Homework...

I thought so. Must be a mistake with the automated quiz.

Homework Statement Two parallel plates with opposite charges are 0.01 m apart and have a potential difference of 100 V. A charged spherical object has 20 excess electrons stays motionless between the plates. If the density of the object is 1000 kg/m^3, what is the radius of the spherical...

Thank you. I understand now.

Homework Statement Suppose you have 2 springs in series, one is linear and one is non-linear. Initially the linear spring is at the top position and the non-linear is on bottom. Does swapping the springs affect the system? Homework Equations 1/k_eq = 1/k1 + 1/k2 This equation doesn't apply...

Thank you very much for the great answer BvU. I realize now that I can't explain why the value is negative because it is unrealistic but that I can explain why it is unrealistic.

Homework Statement A spring system consists of two parallel springs on top and a single spring connected to them on the bottom as shown: http://i.imgur.com/hgMr12U.png If the system is extended by 7 cm (i.e. x = 0.07m), F = 5N and k2 = 10 N/m, explain why the value of k1 is unrealistic...